Locking device for extension tables



May 25 1926. 1,586,000

N. J. LUNDEEN LOCKING DEVICE FOR EXTENSION TABLES Fi led Nov; 28, 1922 Patented May 25, 1926.

UNITED STATES restate NELS J. LUNDEEN, OF PORTLAND, OREGON.

LOCKING DEVICE FOR EXTENSION TABLES/ Application filed November 28, 1922. Serial No. 603,819.

This invention has reference to extension tables, and refers more particularly to a section locking device therefor.

One object of this invention is the provision of a locking device for the sections of an extension table which consists of few parts-and is easy and inexpensive to manufacture.

A further object of this invention is the provision of means for operating the before mentioned table locking device.

In table locking devices heretofore in use, the operating handle therefor is usually placed upon the lower surface of one of the table top sections, such place being inconvenient to reach by hand, and often times practically inaccessible. It is therefore, a still further object of this invention to provide an operating means for table locks which is at all times easily accessible by hand, for looking or unlocking the table top sections.

In the drawings wherein is shown the preferred embodiment of the present invention and in which, similar characters of reference designate similar parts in the several views:

Figure is a side view of the device shown in position upon a table top,

Fig. 2 is an elevation of the device in locked position,

Fig. 3 is an elevation of the device in unlocked position,

Fig. 4 is a fragmentary perspective View of the device,

Fig. 5 is a sectional view on the line 55, Fig. 4.

Referring more particularly to the drawings the numerals 1 and 2 designate sections of a table top, they being separable as is customary in extension tables. 3 designates the usual table rim secured to section 1.

The numeral 4 denotes a lock lever pro vided with a hooked end 5 which is adapted to be engaged with the keeper 6 secured to section 2 of the table top.

Pivotally secured to the end of lock lever 4 as shown at 10 is one end of a link 11 the opposite end of which is pivotally secured at 12 to a link support 13 which latter is secured to the under side of table section 1 by means of screws 14 or the like.

The lock lever 4 and link 11 are supported and work within straps 15 secured to the table section 1. I

As clearly shown in the drawings, the pivot 10 extends almost to the table rim 3, being positioned within an opening 16 in the upper edge of a slidable handle or lever op erator designated broadly as 17.

The handle 17 comprises a main body portion 18 provided with a longitudinal groove 19 which supports said body slidably upon a keeper or support 20, the latter being secured to the table rim 3 by means of screws 21.0r the like. Secured to the inner face of body portion 18, at the upper edge thereof and positioned upon each side of opening 16 are pusher elements 22, and secured to the lower edge of said body 18, is a knob or the like 23, by which the. handle 17 may be reciprocated.

If desired, the structure of handle 17 may be such that the groove 19 is eliminated, and the body 18 supported directly by the pusher elements 22, the lower edges of the latter resting upon keeper 20.

In use, the table sections 1 and 2 bein interlocked as shown in Fig. 2, the handle 17 is moved to. the left by means of knob 23, the pusher element forcing lever 4 and link 11 to the left in and through a short arc. This movement forces the head 5 of lever 4 away from its coacting lock element 6, and against the abutment 8 this latter movement slightly separating sections 1 and 2 of the table top in an obvious manner.

When it is desired to lock the sections 1 and 2 of the table top, they are manually pushed together in the usual manner, then the handle 17 is moved to the right, the element 22 forcing lever 4 and link 11 in an are on pivot 12 of the link support 13 forcing head 5 of lever 4 within the keeper, the sections 1 and 2 thus being securely interlocked.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is,

In a table having separable top sections and a depending rim, a keeper on one of said sections, a locking arm slidably mounted in keepers of the other section and adapted to engage the keeper on the other section, a link pivotally connected with one end of the link While its other end is pivotally mounted on the same section as the said arm, a support mounted on said rim, an operating handle slidably mounted on said support, spaced pushers on said handle, between 10 Which is positioned the pivoted ends of the said arm and link whereby the arm and link may be operated.

In testimony whereof I affix my signature.

NELS J. LUNDEEN. 

